Multi-wavelength beam profile analysis of near-infrared nanosecond pulses

Olafsen, L. J.; Olafsen, Jeffrey

doi:10.1016/j.infrared.2020.103228

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“…The nonlinear frequency conversion technique based on nonlinear crystal implementation is one of the effective methods to generate the mid-infrared laser. Compared with the typical single-peaked mid-infrared laser, the multi-peaked broadband mid-infrared laser generated by nonlinear frequency conversion plays an efficient role in measurement calibration and analysis [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Broadband, Continuous-Wave, Mid-Infrared Generation Based on TFBG Spectral Modulation

Wang

et al. 2022

IEEE Photonics J.

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We demonstrated a tilted fiber Bragg grating (TFBG)-based modulated amplified spontaneous emission (ASE) source, followed by the broadband, continuous-wave (CW) mid-infrared laser generated by intracavity difference-frequency generation (DFG). By flattening the spectrum of the ASE source during its power amplification and injecting another 1018 nm fiber laser in the optical parametric oscillation(OPO) cavity, nonlinear frequency conversion was achieved in the nonlinear crystal. By tuning the polarization period of the crystal, a three-peaked mid-infrared laser with a full width at half maximum (FWHM) of 130 nm and a four-peaked mid-infrared laser with an FWHM of 180 nm was generated.

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Section: Introductionmentioning

confidence: 99%